Here is the full list of all 10 The Secret of Hutton Grammar School achievements.
Better luck next time!
Why is that picture so familiar?
Just add water!
Found the secret entrance.
Knocked out the leader...
Turned off the fire alarm!
Oops, you set yourself on fire!
Nosey! Or ear-ey?
Can we call this a stealth game?
There's adventuring to do!